Shane Parrish (69:21)
You know, I kind of have my own framework for approaching nutrition and it has a lot to do with, you know, I did my postdoc training in nutrition and in specifically looking at micronutrients. So these are about 40 or so essential vitamins and minerals that fatty acids also and amino acids that we have to get from our diet. And those are in a variety of foods. And different foods have different levels and quantities of them. And these micronutrients are running our metabolism, they're running everything, our neurotransmitters that we're producing. So our cognition, just absolutely everything that is going on in our bodies. So it's important to get them. Because if we don't get them, we can have deficiencies or insufficiencies, which is quite worse because insufficiencies are kind of something that you don't notice every day. But there's like insidious types of damage just happening each and every day. And it accumulates over time and plays a role in age related diseases like cancer and neurodegeneration disease. So these micronutrients are things like, you know, calcium, magnesium, vitamin K, vitamin D, which I'm sure we'll talk about, is actually something you can mostly get from the Sun, Omega 3. And, and so when you think about the, this, the, the micronutrients that you need in your diet, it makes it a little bit easier to think about what you should be eating. Okay, so well, let's start with like some of the most common deficiencies in micronutrients. We have magnesium. So almost half of the US population is deficient in or I would say they get insufficient magnesium intake. And magnesium is, it's at the center of a chlorophyll molecule. So chlorophyll makes plant, gives plants their green color. So it's really easy to think about foods you should eat to get magnesium. You should be eating greens, particularly dark leafy greens. So that's something, you know, a framework where it's like, okay, well I need to get my greens because they're high in magnesium. Well, greens are also very high in vitamin K and vitamin K1. There's two forms, vitamin K1. You need it, it's essential when you, when you take in vitamin K1. And it's something like 35% of the US population is not getting enough of that. And I, I'm sure, you know, North America and Canada are very similar. I mean we have very similar for diets. So vitamin K1 is essential for all your blood clotting processes. So you like, in order to like, you know, have your blood clotting, which is important, you know, if you have a cut or something, you know, an injury, you want that clotting to happen so that you don't have like a hemorrhage. Right. So vitamin K is also high in leafy greens. You can also get, sorry, calcium as well from greens. So that's really an easy way to kind of think about greens. The other, the other way, the other thing is omega 3s, right. So omega threes are very high in fatty fish. So this would be things like wild Alaskan salmon or cod or mackerel, sardines like these are good forms of fish that have the marine type types of omega 3. So that would be DHA and EPA and those are very important for a lot of functions including brain health and cardiovascular health. And there's a lot of evidence, if you actually look at the evidence. A lot of work has been done by Bill Harris and his group at the Fatty Acid Research Institute. And they have, they look at omega, the omega 3 index, which is a way you can actually quote, quantify your omega 3 levels. And that's really good to be able to quantify something because if you don't quantify it, you don't really know if you are getting enough of it. Right. So the omega 3 index is high in red blood cells and, or sorry, it's in the, it's. They're, they're characterizing it from red blood cells which is different than a lot of other ways of measuring Omega 3. Like for example Plasma Omega 3, which is basically kind of reflective of your dietary intake the last week or so. The red blood cell or the omega 3 index is more of a long term status. So it's like 120 days for a red blood cell to turn over. So the omega 3 index is a good marker of your omega 3 status. And people that have a high omega 3 index and that would be 8% or more, have a five year increased life expectancy compared to people with a lower omega 3 index, which is more like 4%. Now people in the United States on average have about an omega 3 index of about 5%. And you compare that to for example countries like Japan where they eat a lot of seafood, their omega 3 index is around 10%. So and they also have a five year increased life expectancy compared to people in the United States. But there's been tons of studies looking at Omega 3 index and life expectancy expectancy. And there's been also like data where they stratify, like looking at, you know, for example, and this, I like talking about this because I think it really puts in perspective the framework of nutrition and thinking about, instead of focusing on what to avoid focusing on what you need. Because if you focus on what you need, then it's obvious what you don't need. Right? There's no nutritional value in processed foods. You're not getting micronutrients, you're getting calories, you're not getting protein, you're not getting things that you need. So smoking is something that everyone knows is bad. You should avoid smoking, right? It's, you know, heart disease, cancer, you're going to have a decreased life expectancy, emphysema, all kinds of problems. Right? Well, what Bill Harris's group had done has they looked at life expectancy of smokers and non smokers, and then they categorized their Omega 3 index. And if you look at this data, it's just mind blowing. So obviously, non smokers that have a high omega 3 index of 8% or more have the highest life expectancy. And the lowest life expectancy is smokers with a low omega 3 index. So there's like, that's the worst of the worst. But when you look at smokers with a high omega 3 index, they have the, they have the same life expectancy as non smokers with a low omega 3 index. In other words, smoking was like having low omega 3 or having a low omega 3 index was like smoking. And when I say you look the life expectancy, if you look at the graph in the publication, the curves, like, overlay perfectly. It's kind of freakish where you're like, whoa, like, the people that are smoking, but they're getting a lot of Omega 3, have the same, like, life expectancy of these people that don't smoke but have very low omega 3. And that's kind of like, I, I like talking about that because I feel like it puts it in perspective for people because like I said, no one's really thinking about, I'm not eating my fish today. I'm not supplementing with an Omega 3 supplement to get that, those Omega 3s, you know. But people are thinking about, oh, I shouldn't smoke because it's bad. Right? So again, it goes back to that framework of thinking about what you need and starting there as opposed to just like, okay, what should I avoid? Because when you think about what should I avoid? Then you're not like, people aren't thinking about magnesium. They're not thinking about the vitamin K, they're not thinking about Omega 3. And by the way, magnesium, I said about half the population in the United States doesn't get enough. They're not eating enough greens. And unfortunately, there's not a great test for magnesium because our body stores magnesium in our bones. And so anytime we're not getting enough in our diet, our body pulls it out of our bones to, like, because we need it. It's so important. You need it to make energy. Like, without magnesium, you can't make energy, so nothing's going to function. But you also, it's needed to repair damage. Like, every time you have, you know, like right now, you and I, we're we're having a conversation. You know, we're, you know, neurotransmitters are firing. We're thinking about things like that's causing damage. Metabolism, all that stuff causes damage on a daily basis. But our body repairs that damage. But magnesium is a cofactor for these enzymes. These are proteins that are doing everything for that to function properly. And so if you don't get enough of that magnesium to do that, what happens is you don't repair that damage properly. And that can increase the risk of getting a mutation that can lead to cancer. And so there's all sorts of studies that have looked at magnesium intake in cancer. And, you know, it's been found that, for example, for every 100 milligram increase in magnesium intake, there's something like a 20% decrease in pancreatic cancer risk. And there's been lots of studies like this looking at magnesium intake and cancer risk. And so the higher the magnesium intake, the lower the cancer risk. So, again, it's one of those things where you can't look in the mirror and go, as you're brushing your teeth, oh, I don't have enough magnesium today. Right. Like, nothing's, like, showing you that, but it's happening. That damage is insidious. And I mentioned you pull it out of your bone, like, it's pulled out of your bones. And that's another thing. It leads to osteoporosis over time. So, you know, investing in magnesium. So in other words, remembering to eat your leafy greens is getting your magnesium. So women need about, I'd say, about 320 milligrams a day. Adult women need about 320 milligrams a day of magnesium. Men need around 420 milligrams a day. And, you know, this can change based on your. Your physical activity level as well. So, like, if you're physically active, if you're sweating, you sweat out magnesium, you also use it up for energy. So you might actually require anywhere between 10% to 20% more than that level. So what's called the recommended daily allowance in the United States. So, you know, again, and people aren't even meeting that. So investing in magnesium is like a way you can think about, like, also for bone health. Because, you know, if you are getting enough magnesium on a daily basis, you're not going to be pulling it out of your bones, and therefore you're not. Magnesium's important for your bones, and so as you keep doing that year after year after year, it dramatically increases osteoporosis. Risk, right. So there's lots of reasons to invest in, you know, these micronutrients and to think about the foods that you need to eat. And I, and so beyond the micronutrients it goes to the macro, right?
